data modify storage vs:system temp.VS.custom set from entity @s item.components."minecraft:custom_data".VoidShopSlot
data remove storage vs:system temp.VS.custom.Item

data remove entity @s item.components
data modify entity @s item.id set value "black_stained_glass_pane"
data modify entity @n[tag=VoidShop.slotText,distance=..1,type=text_display] text set value '{"text": "","color": "white"}'
data modify entity @s item.components."minecraft:custom_data".VoidShopSlot set from storage vs:system temp.VS.custom
data modify entity @s item.components."minecraft:custom_data".VoidShopSlot.isNull set value true

data remove storage vs:system temp.VS.custom